You dont really need the evo exhaust manifold, and the evo 02 housing wont line up correctly with your downpipe. How much is a ported evo 02 housing going to cost you? you could just go with a 2.5 tubular o2 housing from 122performance which will line up perfectly and probably cost less. As for getting a 34mm flapper, FP(forced performance) will disagree. They wont put a 34mm flapper on that turbo saying that a properly ported turbine side/wastegate passage is enough. I know DSMLink is alot, but you should really save up for it, its worth it.